A review of Dichorrhinus Desbrochers, 1875 (Coleoptera, Curculionidae) with two new species from Greece and Turkey, and from Cyprus

The species of the Eastern Mediterranean genus Dichorrhinus Desbrochers, 1875 are reviewed. D. geiseri sp. nov. is described from Samos Island (Greece) and Western Turkey, and D. alziari sp. nov. is described from Cyprus. Dichorrhinus korbi Schilsky, 1911 is redescribed. An illustrated key to the species of Dichorrhinus is provided, and new records are presented

On the mysterious Hylobius huguenini Reitter, 1891 (Coleoptera: Curculionidae: Molytinae)

During verifications of museum material for the Catalogue of the Palaearctic Coleoptera, the type specimen of Hylobius huguenini Reitter, 1891 conserved in the Hungarian National Museum was examined. The type specimen had been found by Gustav Huguenin in the Emmental region in Switzerland. The species was never found again and remained therefore mysterious. After the examination of the type specimen, it became clear that Hylobius huguenini belongs to the American genus Heilipodus Kuschel, 1955 (comb. nov.), and there it ranks as a good species next to Heilipodus goeldii sp. nov., described here, and H. polyspilus (Pascoe, 1889), both from Brazil. The type specimens of Heilipodus goeldii sp. nov. were found in the Emil August Göldi-collection in the Natural History Museum of the Burgergemeinde Bern

Fine- and hyperfine-structure effects in molecular photoionization: II. Resonance-enhanced multiphoton ionization and hyperfine-selective generation of molecular cations

Resonance-enhanced multiphoton ionization (REMPI) is a widely used technique for studying molecular photoionization and producing molecular cations for spectroscopy and dynamics studies. Here, we present a model for describing hyperfine-structure effects in the REMPI process and for predicting hyperfine populations in molecular ions produced by this method. This model is a generalization of our model for fine- and hyperfine- structure effects in one-photon ionization of molecules presented in the preceding companion article. This generalization is achieved by covering two main aspects: (1) treatment of the neutral bound-bound transition including hyperfine structure that makes up the first step of the REMPI process and (2) modification of our ionization model to account for anisotropic populations resulting from this first excitation step. Our findings may be used for analyzing results from experiments with molecular ions produced by REMPI and may serve as a theoretical background for hyperfine-selective ionization experiments

Survey of electrical resistivity measurements on 8 additional pure metals in the temperature range 0 to 273 K

Electrical resistivity measurements on pure metals in temperature range 0 to 273

Study of a Proposed Infrared Horizon Scanner for Use in Space-Orientation Control Systems

An attitude-sensing device for space vehicles which detects the thermal radiation discontinuity at opposite horizons of a planetary body to produce an attitude error signal is described. The planetary body may be the Earth, its Moon, Mars, or Venus. The sensor is expected to have an accuracy of 0.25 degrees for the Earth, a long continuous operating lifetime, a wide altitude range, a wide capture capability, and an inherent ability to produce signals indicating vehicle altitude. An experimental model incorporating many of the features of the proposed sensor indicates that the proposed sensor will be low in weight, volume, and power consumption. The sensor's altitude range, accuracy, lifetime, and sensitivity to radiation from the Moon and planets are discussed

First record of Styphlus transjonicus Osella & Zuppa, 1994 from Malta (Coleoptera, Curculionidae)

Three specimens of Styphlus transjonicus Osella & Zuppa from Malta were found in the collection of George Charles Champion conserved at The Natural History Museum, London. The record of this species, presently known from southern Italy represents the first one from the Maltese Islands. Previous records of Orthochaetes setiger (Beck) from Malta were based on misidentifications and should refer to S. transjonicus.peer-reviewe